From 86ec82fd06768a8d4afc5a35edb7b12af3640d36 Mon Sep 17 00:00:00 2001
From: Scott Powell <sqij@protonmail.com>
Date: Tue, 12 Aug 2025 20:56:59 +1000
Subject: [PATCH] * Heltec CT62: sensor role (with 2 channel relay support + 1
 digital input)

---
 variants/heltec_ct62/HT-CT62Board.h | 30 +++++++++++++++++++++++++++--
 variants/heltec_ct62/platformio.ini | 21 ++++++++++++++++++++
 2 files changed, 49 insertions(+), 2 deletions(-)

diff --git a/variants/heltec_ct62/HT-CT62Board.h b/variants/heltec_ct62/HT-CT62Board.h
index e5a627b8..d26e7b26 100644
--- a/variants/heltec_ct62/HT-CT62Board.h
+++ b/variants/heltec_ct62/HT-CT62Board.h
@@ -8,9 +8,35 @@
 #include <helpers/ESP32Board.h>
 
 class Heltec_CT62_Board : public ESP32Board {
-public:
+  uint32_t gpio_state = 0;
 
-uint16_t getBattMilliVolts() override {
+public:
+  void begin() {
+    ESP32Board::begin();
+#if defined(PIN_BOARD_RELAY_CH1) && defined(PIN_BOARD_RELAY_CH2) 
+    pinMode(PIN_BOARD_RELAY_CH1, OUTPUT);
+    pinMode(PIN_BOARD_RELAY_CH2, OUTPUT);
+#endif
+#if defined(PIN_BOARD_DIGITAL_IN)
+    pinMode(PIN_BOARD_DIGITAL_IN, INPUT);
+#endif
+  }
+  uint32_t getGpio() override {
+#if defined(PIN_BOARD_DIGITAL_IN)
+    return gpio_state | (digitalRead(PIN_BOARD_DIGITAL_IN) ? 1 : 0);
+#else
+    return 0;
+#endif
+  }
+  void setGpio(uint32_t values) override {
+#if defined(PIN_BOARD_RELAY_CH1) && defined(PIN_BOARD_RELAY_CH2) 
+    gpio_state = values;
+    digitalWrite(PIN_BOARD_RELAY_CH1, values & 2);
+    digitalWrite(PIN_BOARD_RELAY_CH2, values & 4);
+#endif
+  }
+
+  uint16_t getBattMilliVolts() override {
   #ifdef PIN_VBAT_READ
     analogReadResolution(12);         // ESP32-C3 ADC is 12-bit - 3.3/4096 (ref voltage/max counts)
     uint32_t raw = 0;
diff --git a/variants/heltec_ct62/platformio.ini b/variants/heltec_ct62/platformio.ini
index ba23a5a6..ec24cdcd 100644
--- a/variants/heltec_ct62/platformio.ini
+++ b/variants/heltec_ct62/platformio.ini
@@ -86,3 +86,24 @@ lib_deps =
   ${Heltec_ct62.lib_deps}
   ${esp32_ota.lib_deps}
   densaugeo/base64 @ ~1.4.0
+
+[env:Heltec_ct62_sensor]
+extends = Heltec_ct62
+build_flags =
+  ${Heltec_ct62.build_flags}
+  -D ADVERT_NAME='"HT-CT62 Sensor"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D PIN_BOARD_SDA=-1
+  -D PIN_BOARD_SCL=-1
+  -D PIN_BOARD_RELAY_CH1=0
+  -D PIN_BOARD_RELAY_CH2=1
+  -D PIN_BOARD_DIGITAL_IN=19
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${Heltec_ct62.build_src_filter}
+  +<../examples/simple_sensor>
+lib_deps =
+  ${Heltec_ct62.lib_deps}
+  ${esp32_ota.lib_deps}